The Great Louisiana Flood of 2011

I don't envy the people that have to make these decisions:

In an agonizing trade-off, Army engineers said they will open a key spillway along the bulging Mississippi River as early as Saturday and inundate thousands of homes and farms in parts of Louisiana's Cajun country to avert a potentially bigger disaster in Baton Rouge and New Orleans.

About 25,000 people and 11,000 structures could be in harm's way when the gates on the Morganza spillway are unlocked for the first time in 38 years.

"Protecting lives is the No. 1 priority," Army Corps of Engineers Maj. Gen. Michael Walsh said aboard a boat from the river at Vicksburg, Miss., hours before the decision was made to open the spillway.

The opening will release a torrent that could submerge about 3,000 square miles under as much as 25 feet of water in some areas but take the pressure off the downstream levees protecting New Orleans, Baton Rouge and the numerous oil refineries and chemical plants along the lower reaches of the Mississippi.

Engineers feared that weeks of pressure on the levees could cause them to fail, swamping New Orleans under as much as 20 feet of water in a disaster that would have been much worse than Hurricane Katrina in 2005.

Instead, the water will flow 20 miles south into the Atchafalaya Basin. From there it will roll on to Morgan City, an oil-and-seafood hub and a community of 12,000, and then eventually into the Gulf of Mexico, flooding swamps and croplands.

Can you imagine being one of those people whose homes and farms will be sacrificed to save Baton Rouge and New Orleans? The people who will be saved by this effort owe those folks a huge debt.